... hóa hc: (1) CaCO3 + CO 2 + H2O Ca(HCO3)2 (2) CaCO3 + 2HCl CaCl2 + CO 2 + H2O (3) Ca(OH)2 + CO 2 CaCO3 + H2O (4) Ca(HCO3)2 CaCO3 + CO 2 + H2O Phn ... Ba(OH)2, Ba(HCO3)2, BaCO3, Ba(NO3)2, BaCl2. B. BaO, Ba(OH)2, BaCO3, Ba(HCO3)2, BaCl2. C. Ba(OH)2, BaCO3, BaO, Ba(HCO3)2, BaCl2 . D. Ba(OH)2, Ba(HCO3)2, BaCO3, ... dch HCl là: A. (NH4)2 CO 3, NH4NO3, Al2O3. B. NaHCO3, (NH4)2 CO 3, NH4NO3. C. NaHCO3, KHSO4, (NH4)2 CO 3. D. NaHCO3, (NH4)2 CO 3, Zn(OH)2. ...